func signV4TrimAll(input string) string {
	// Compress adjacent spaces (a space is determined by
	// unicode.IsSpace() internally here) to one space and return
	return strings.Join(strings.Fields(input), " ")
}

// checkMetaHeaders will check if the metadata from header/url is the same with the one from signed headers
func checkMetaHeaders(signedHeadersMap http.Header, r *http.Request) APIErrorCode {

	}

	relSuffix := ""
	if hotfix := os.Getenv("MINIO_HOTFIX"); hotfix != "" {
		relSuffix = hotfix
	}

	relTag := strings.Replace(version, " ", "-", -1)
	relTag = strings.Replace(relTag, ":", "-", -1)
	t, err := time.Parse("2006-01-02T15-04-05Z", relTag)
	if err != nil {
		panic(err)
	}
	relTag = strings.Replace(relTag, ",", "", -1)
	relTag = relPrefix + "." + relTag
	if relSuffix != "" {
		relTag += "." + relSuffix
	}

}

// parseDestination - parses string to Destination.
func parseDestination(s string) (Destination, error) {
	if !strings.HasPrefix(s, DestinationARNPrefix) && !strings.HasPrefix(s, DestinationARNMinIOPrefix) {
		return Destination{}, Errorf("invalid destination '%s'", s)
	}

	bucketName := strings.TrimPrefix(s, DestinationARNPrefix)

	return Destination{
		Bucket: bucketName,
		ARN:    s,
	}, nil

	name := runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()

	packageName := fmt.Sprintf("github.com/minio/minio/cmd.%s.", cmdType)
	name = strings.TrimPrefix(name, packageName)
	name = strings.TrimSuffix(name, "Handler-fm")
	name = strings.TrimSuffix(name, "-fm")
	return name

		return c.roundtrip(h, req)
	}

	// Following trimming is needed for consistency between outputs with other internode traces.
	local := strings.TrimPrefix(strings.TrimPrefix(t.Local, httpsScheme), httpScheme)
	remote := strings.TrimPrefix(strings.TrimPrefix(t.Remote, httpsScheme), httpScheme)

	start := time.Now()
	body := bytesOrLength(req)
	resp, err := c.roundtrip(h, req)
	end := time.Now()

package event

import (
	"strings"

	"github.com/minio/pkg/v2/wildcard"
)

// NewPattern - create new pattern for prefix/suffix.
func NewPattern(prefix, suffix string) (pattern string) {
	if prefix != "" {
		if !strings.HasSuffix(prefix, "*") {
			prefix += "*"
		}

		pattern = prefix
	}

	if suffix != "" {
		if !strings.HasPrefix(suffix, "*") {
			suffix = "*" + suffix
		}

	if node == "" {
		for index, e := range exp {
			result = append(result, localDisk{index: index, path: strings.Join(e, "")})
		}
	} else {
		for index, e := range exp {
			u, err := url.Parse(strings.Join(e, ""))
			if err != nil {
				return nil, err
			}
			if strings.Contains(u.Host, node) {
				result = append(result, localDisk{index: index, path: u.Path})
			}
		}
	}

			}
		case AWSKms:
			keyID := rule.DefaultEncryptionAction.MasterKeyID
			if keyID == "" {
				return nil, errors.New("MasterKeyID is missing with aws:kms")
			}
			spaces := strings.HasPrefix(keyID, " ") || strings.HasSuffix(keyID, " ")
			if spaces {
				return nil, errors.New("MasterKeyID contains unsupported characters")
			}
		}
	}

	if config.XMLNS == "" {
		config.XMLNS = xmlNS
	}

		return nil, err
	}
	defer file.Close()

	s, err := bufio.NewReader(file).ReadString('\n')
	if err != nil && !errors.Is(err, io.EOF) {
		return nil, err
	}
	statLine := strings.TrimSpace(s)
	for _, token := range strings.Fields(statLine) {
		ui64, err := strconv.ParseUint(token, 10, 64)
		if err != nil {
			return nil, err
		}
		stats = append(stats, ui64)
	}

	return stats, nil

	usersPrefix := strings.HasPrefix(event.keyPath, iamConfigUsersPrefix)
	groupsPrefix := strings.HasPrefix(event.keyPath, iamConfigGroupsPrefix)
	stsPrefix := strings.HasPrefix(event.keyPath, iamConfigSTSPrefix)
	svcPrefix := strings.HasPrefix(event.keyPath, iamConfigServiceAccountsPrefix)
	policyPrefix := strings.HasPrefix(event.keyPath, iamConfigPoliciesPrefix)